About NutriBrew Ireland
NutriBrew is an Irish fermentation and live culture company founded in 2019, specialising in authentic Milk Kefir Grains, Kombucha SCOBYs, yogurt cultures and sourdough starters for home fermentation.
Based in Limerick, Ireland, our mission is simple: to provide fresh, biologically active cultures backed by genuine fermentation expertise, scientific curiosity and long-term customer support.
Our Story
NutriBrew began under the original KefirGrains.ie brand with a focus on supplying authentic live cultures to home brewers across Ireland. What started as a small fermentation project quickly developed into one of Ireland’s most recognised specialist suppliers of probiotic starter cultures and fermentation products.
Over the years, thousands of customers across Ireland and Europe have used our cultures to successfully ferment milk kefir, kombucha, yogurt and sourdough at home.
In 2024, the NutriBrew brand was officially established to support our expanding educational work, research collaborations and international growth.
Authentic Live Cultures
We strongly believe that authentic heirloom cultures produce superior fermentation results compared to heavily processed or industrial alternatives.
Our cultures are selected for:
- Freshness and biological activity
- Strong fermentation performance
- Microbial diversity
- Consistency and resilience
- Long-term culture stability
Every batch is prepared with care to help home fermenters achieve reliable and repeatable results.
We also provide detailed fermentation instructions and guides to help customers confidently brew and maintain their cultures at home.
Science, Research & Education
Alongside practical fermentation, NutriBrew has supported microbiome-focused citizen science and educational initiatives connected to Irish and European research programmes.
Our water kefir grains, supplied under our original name Live Ferments, were used in Kefir4All, a citizen science project associated with the EU-funded MASTER programme, run in collaboration with Teagasc, APC Microbiome Ireland and VistaMilk. The study is published in the Journal of Microbiology & Biology Education and is freely available to read: Kefir4All, a citizen science initiative to raise awareness of the roles that microbes play in food fermentation.
The project explored how kefir grain microbial communities adapt and evolve across long-term home fermentation environments, by analysing over 500 fermentation samples collected from 123 citizen scientists over 21 weeks. Results showed that kefir’s microbial diversity held up consistently well across a wide range of real home settings, not just controlled laboratory conditions.
We are passionate about improving public understanding of fermentation, probiotics and microbial ecosystems through accessible educational content, practical guidance and transparent communication.
Featured in Irish Media
NutriBrew’s live cultures have also been featured on Irish national media. In December 2019, Nutrition Therapist Yvonne O’Shaughnessy announced her invitation to demonstrate how to make water kefir and kombucha live on RTÉ’s The Today Show with Maura & Daithi, using cultures sourced from kefirgrains.ie.
Following her appearance, she shared a detailed explainer on water kefir referencing the segment, and later posted a step-by-step kombucha demonstration from her own kitchen, crediting our cultures as the source for her SCOBY.
In April 2020, she also featured our cultures in a kombucha-making video for RSVP Magazine, where she writes as their regular Health & Nutrition Coach.
Trusted By Thousands
Since 2019, NutriBrew has built a strong reputation for product quality, customer support and reliable fermentation results.
Today, we have accumulated hundreds of verified customer reviews across Trustpilot and Google Reviews from customers throughout Ireland and Europe.
You can also browse our dedicated customer reviews page to see real fermentation experiences from our community.
Why Customers Choose NutriBrew
- Authentic heirloom cultures
- Fresh cultures prepared in Ireland
- Long-standing fermentation experience
- Educational support and guides
- Fast shipping across Ireland and Europe
- Trusted by thousands of home fermenters
Our Mission
Our goal is to make authentic live fermentation accessible to more homes throughout Ireland and Europe while maintaining the highest standards of quality, transparency and customer support.
At NutriBrew, we believe fermentation should be approachable, reliable and rooted in genuine biological quality — not marketing hype.
For more information, please visit our contact page or view our shipping and returns information.